Xi’an Chancemate Petroleum Mechanical Co.,Ltd

reversing sub-back off sub

Product Name:

reversing sub-back off sub

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Product Description

reversing sub-back off sub

Product pictures of reversing sub-back off sub

reversing sub is also called back off sub or reversing spear , which is a special tool for revering stuck drill stem above stuck point in drilling and work over operation. In treatment of stuck drill stem, reversing sub-back off sub can work as a fishing pin tap in reversing operation.When fish is stuck or can not be reversed in fishing or reversing operation,the fish can be reversed from reversing sub and the fishing drill tool can be tripped out. sub can be replaced taper tap in back-off operation while dealing with stuck accident.

Specifications of reversing sub-back off sub

Type	O.D. (mm)	Joint Thread (Left-hand Thread)	Fishing Thread (Right-hand thread)	Tensile Strength	Torsional Strength
DJT105	105	2 7/8IF	2 7/8″IF	500	9
DJT121	120	NC38	NC38	900	15
DJT159	159	NC50	NC50	1500	35
DJT165	165	NC50	NC56 5-1/2FH	1900	45
DJT178	178	5 1/2″FH,NC50	5 1/2″FH NC50	2000	50
DJT197	197	6 5/8″ REC	6 5/8 ″REC	2500	65

My friend, if you have any requests of our reversing sub-back off sub, please send your requests to my email: sales@chancematewellcontrol.com, we are 24 hours online to give you the best service